Update OMT schema

[etienneJr]

fixes #845

This PR updates process-openmaptiles.lua to fit the latest version of OMT: v3.15

Checked and modified:

• [x] landcover : add flowerbed
• [x] landuse : add quarry, garages (landuse), grave_yard (amenity), track (leisure), suburb, quarter, neighbourhood (place) and dam (waterway)
• [x] park : add protected areas
• [x] POI : add offices (60 values) + some new values for amenity (atm, drinking_water, parcel_locker, charging_station. + embassy removed since deprecated) and shop (car_parts, locksmith, paint) + class modification (chocolate and confectionery are no more ice_cream but shop)
• [x] transportation : add shipway in class ferry
• [x] water : add ponds + new classes

Checked and no update required:

• [x] aerodrome_label
• [x] aeroway
• [x] boundary
• [x] building
• [x] housenumber : but need confirmation for the 2 lastest commit in history (housenumber deduplication + range instead of ;)
• [x] moutain-peak
• [x] place
• [x] waterway

[etienneJr]

I have finished updating the relevant layers, this PR is ready for review, thanks !

[etienneJr]

cartes.app process-openmaptiles.lua script is now based on this version (with a few other minor changes). You can check the resulting tiles here : https://pmtiles.io/#url=https%3A%2F%2Fserveur.cartes.app%2Fpmtiles%2Fplanet.pmtiles&map=0.71/0/0

[systemed]

Fabulous. I'm planning to merge the various OMT-related PRs into one and push that shortly.